Grinding-mill.



N0. 650,782. Patented May .29, I900. B. ELLIN.

GRINDING MILL.

(Application med Mar. 23, 1899.)

2 Sheets-Sheet l.

( o Model.)

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No. 650,782. Patented May '29, I900.

' R. ELLIN.

GRINDING MILL.

(Application filed Mar. 23, 1899.) (N0 Mudel.) 2 SheetsShee t 2.

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INVENTOR JZOZeIZFZZiIZ.

%i a l BY 7 ATTORNEYS I 1 ground. Fig. 3 is a sectional elevation of the ROBERT ELLIN, OF YONKERS, NEW YORK.

GRINDIN SPECIFICATION forming part of Letters Application filed March 2 3 1 8 9 9.

To all whom it may concern:

Be it known that 1, ROBERT ELLIN, a citizen of the United States, residing at Yonkers, in the county of Westchester and State of- New York, have invented new and useful Im-' provements in Crushing or Grinding Mills, of which the following is a specification.

This invention relates to improvements in mills of the .kind described in my United States patent application, Serial No. 672,426, filed March 3, 1898; and the invention resides in certain novel featuresof construction set forth in the following specification and claims and illustrated in the annexed drawings, in which- Figure 1 is a plan view of the mill, partly sectioned along 00 00, Fig. 3. Fig. 2 shows the top of the shaft receiving the mate'rial'to be mill. Fig. 4 shows a spreader or box. Fig. 5 shows a modified form of spreader. Fig. 6 shows a modified form of shaft. Fig. 7 shows a supporting post or column.

In the drawings is shown a base or support 42, from which rises a rim or flange 52, carrying a hearing or sleeve 20 for a central vertical shaft 6, rotated by gear 7. A pan or re ceptacle is formed by a screen 36, suitably supported below on base 42 and having its top edge inserted between the lower contracted or conical rim portion of a shield 45 and of a band 61, engaged by flange-pieces 63 on shield 45 and resting on collars or clamps 49 on posts 48, supported on base 42. The collars can be set higher or lower on posts 48, as required by the height of screen 36.

The pulverizing die or ring 2 is shown on base 42. The 'pulverizing-wheels 1 run on the die and are driven by their axles 3 and connection 4, extending to shaft 6, having an upper or chamber portion 22 secured thereto. The connection 4 has its center or hub part sitting in the central chamber of shaft part 22, and its radiating arm or part extended through longitudinal slots reaching through the chamber part 22 into its interior.

Suitable adjusting mechanism is provided by which the pressure of the wheels on the die can be regulated. Extended through the tubular shaft is a bolt 38, holding spring 39 onto connection 4, so as to pressthe latter,

G-MILL.

Patent No. 650,782, dated May 29, 1900. $e1'ialN'o.'7l0,21Z. (No model.)

with the wheels 1, onto ring 2. The nut or bolt 38 can be set to tighten or loosen spring 39 and regulate pressure. The spring 39 could be omitted, as seen in Fig. 6, but is preferred, as liable to avoid breakage. The axle 3 is pivoted at 5 to such connection 4, and a bolt 11 is shown engaging axle 3 and having its spring 12 braced against connection 4 to hold the axle 3 in line with the connection or swing the axle, with its wheel, toward the ring 2.

Should it be desired to remove the shaft 3 from wheel 1 while leaving the wheel on the track 2, the pin 5 and bolt 11 are removed to detach the shaft 3 from connection 4. The shaft can then be drawn away from the connection 4 and out of wheel 1. The wheel has a bushing or box 58 for the axle, and by loosening the screws or fastenings 59 at flange 60 this bushing, with axle 3, can be removed for cleaning or repair, while leaving the wheel 1 in place.

The dust-cap 43, with the stuffing-box 44, Fig. 3, at the rear or inner portion of the axle, serves to keep the axle and hub clean and provide an oil-reservoir sufficient to lubricate the axle for a considerable period.

The upper or chambered portion 22 of the shaft 6 has a cover or top piece 37, made to close or protect the chamber, and this top piece is provided with an upper central feed 13, shaped as a funnel and made to sit 011 this top 37. The top 37 has a receiving-face 15, which can be variously shaped. In Fig. 3, for example, the face 15 is adapted to allow the material to immediately pass off, while in Fig. 6 the cup-shaped face 15 is adapted to retain a certain layer of material, which protects the face against wear by subsequent material coming from feed 13.

From face 15 lead the outlets 16 to lateral chutes 17. The chutes 17- discharge into the boxes or Spreaders 18, so that these boxes communicating with feed 13 will spread the material on the path 2 of the wheels 1. These boxes, as seen in Figs. 4 and 5, each have a vertically-extendingtortuous or undulating channel, so that the material falling therethrough is scattered or spread on the die 2 instead of being bunched along a line. Each spreader has plows 40 at its sides or connected thereto, the spreader 18 being fixed to shaft portion 22 by brackets 41, attached to and extending laterally from said shaft portion 22, whereby each hollow spreader or spreader-box 18 stands perpendicular, with its upper end directly under the lower end of a chute 17 and its lower end directly over the horizontal annular bed. The die 2 is supported on pan bottom 42, and troughs or spaces are left at each side of this die. The plows travel with the wheels 1 or spreader l8 and extend into these troughs to clear the latter. Any material falling ofi the die into a trough is thus plowed or thrown back onto the die and crushed or recrushed until fine enough to escape through the screen or pan side 36.

Secured to the shoulder portion 22 of shaft 6 and rotating with such shaft is a guard 53, such as a sheet'iron apron or the like, fitted at its lowerportion to the pan-bottom 42 or to the connection 52 between this bottom and bearing 20. The guard 53 is shown. with spouts or blowers 54, which correspond to the number of the wheels 1 and extend radially, so that a blast from such a spout will blow the material through the discharge screen or sieve 36. Air-pressure can be supplied to the spouts through entrances or holes 56 in connection or flange 52. The pipe 57 supplies lubricant to the top of bearing for the easy running of V the shoulder of shaft-piece 22.

Ball-bearings and 28 can be made to ease the rotation of the shaft 6.

The spouts 54 from guard 53 are placed back of the wheels, and the remainder of the guard is closed or has no opening toward the ring 2, so that the blast is made to follow the Wheel, or, in other words, the blast does not strike the ring until the wheel has passed. The blast thus cannot blow material off the ring in advance of the wheel.

The material which is fed through funnel 13 passes along chutes 17 and is spread by boxes 18 on the ring 2 to be crushed by wheel 1, and when suificiently fine this material passes olf through screen 36.

The band or shield is conveniently made in sections secured together by flange-andbolt connections 46 and -17, while the screen or sieve 36 can also be made of pieces or sections face, a bracket attached to the shaft and ezitending laterally therefrom, and a vertical spreader-box secured to said bracket and having its upper open end arranged directly under the lower end of the inclined chute and its open lower end located directly over the annular die, substantially as and for the piirposes described.

2. A screen, a shield 45 made to lap into the upper edge portion of the screen and provided with a flange-piece 63, and a post and collar 49 having a band 61 made to engage the flangepiece substantially as described.

3. A screen, a shield provided with a flangepiece 63, a post havinga collar 49, and aband 61 on the collar made to engage the flangepiece, said shield having its lower edge portion funnel-shaped and 1 extended into the screen to press the latter outward or toward the band substantially as described.

4. A screen, a shield provided with a flange piece 63, a post, and a collar having a band 61 made to engage the flange-piece, said collar being adjustably mounted on the post so as to enable the shield to beset higher or lower substantially as described.

5. A screen, a shield provided with a flangepiece 63, a post, and a collar carried by the post and having a band 61 made to engage the flange-piece, said post with the collar being removable or dismountable substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ROBT. ELLIN. \Vitncsses:

W. O. HAUFF, E. F. KASTENHUBER. 

